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Eaton KDC3400Y - Molded Case Circuit Breaker 400A 600V 3-Pole

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Eaton KDC3400Y is a 3-pole molded case circuit breaker from the Series C line, designed to provide thermal-magnetic overcurrent protection with long-time and instantaneous (LI) trip functions for electrical distribution systems. It is rated for 400A continuous current at 600VAC and 250VDC, with an interrupting capacity of 100kA at 480VAC and 200kA at 240VAC. The unit features a K-frame construction with bolt-on aluminum terminals, weighs 12 lb, and operates at 50/60 Hz. This breaker complies with industry standards for industrial and commercial applications, making it suitable for protecting feeders and branch circuits in panelboards and switchboards.

Key Features & Specifications
  • Manufacturer: Eaton
  • Item Subcategory: Molded Case
  • Family: Series C
  • Type: KDC
  • Weight: 12 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Voltage Rating: 600 VAC, 250 VDC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 100 kA at 480 VAC, 200 kA at 240 VAC
  • Phase: 3
  • Current Rating: 400 A
  • Amperage: 400 Amp
  • Number of Poles: 3
  • Series/Frame: Series C, K-frame
  • Trip Unit: Fixed thermal, fixed magnetic
  • Interrupt Rating: 200 kAIC at 240 VAC, 100 kAIC at 480 VAC
  • Terminal Material: Aluminum
  • Frequency: 50/60 Hz
  • Connection Type: Line and load